They were delabeled over a period of time of course, not all at once. Also, that 90 cases does not include what I have already bottled and what my friend has at his house (that are his so they don't count). It's easy to get that many when you can get 10 to 15 cases (each of us) a week. Some weeks when I know I'm not going to have time I just throw away the bottle types that I have enough of.
I can soak about 3 cases at a time in 1/2 of my laundry sink that I have in the wine room. I can tell from experience which labels come right off and which ones will need soaking, so I put a case of stubborn ones on the bottom and load the last 2 cases with labels that come off easy. I let them sit for a couple of hours and when I go down to clean them, the labels on the easy ones literally fall off into the water. So I would say on 10 cases, 4 cases the labels fall right off, 4 cases the labels peel off but leave a little glue that a green scrubby pad takes right off with a couple of swipes and then there are 2 cases where the label comes off and leaves what seems like an inch of glue behind that I have to scrape with the back of a knife then scrub with a green scrubby. Then there is the occasional champaign bottle with the foil label that water will not touch!
I clean the bottle with "Oxyclean Versatile". It comes in a small tub and I add 2 scoops per load of bottles. It is oxyclean with laundry (type) soap in it so it suds up a little bit, not much. After de-labeling and cleaning, I rinse in hot water and hang on the bottle tree to dry, then box up and store. I found that this removes the labels and glue the best for me, and it's relatively cheap. Then I do a B Brite cleansing and sanitizing before bottling.